CartBlock Blog

How to Restrict Checkout for Products in a Shopify Collection

Restrict checkout by Shopify collection, combine eligibility conditions, avoid logic mistakes, an...

08/29/2026

How to Block PO Box Addresses at Shopify Checkout

Block PO Box addresses at Shopify checkout with a clear rule, corrective message, false-positive ...

08/29/2026

How to Validate Shipping and Billing Addresses in Shopify Checkout

Use Shopify checkout address validation to build precise shipping or billing rules, handle except...

08/28/2026

Why Shopify Checkout Validation Is Not Working: A Troubleshooting Guide

Troubleshoot Shopify checkout validation with nine focused checks covering scope, logic, Shop Pay...

08/28/2026

How to Set Product Quantity Limits in Shopify (Per Product, Variant, or Cart)

Set a Shopify product quantity limit per variant, product, or cart. Compare native controls with ...

08/27/2026

How to Prevent Incompatible Products From Being Purchased Together on Shopify

Prevent incompatible products from being purchased together on Shopify. Build precise CartBlock r...

08/27/2026

How to Restrict Payment Methods at Shopify Checkout

Restrict payment methods at Shopify checkout with CartBlock. Follow eight clear setup steps, avoi...

08/26/2026

How to Restrict Shopify Products by Country Without Blocking the Entire Market

Restrict Shopify products by country without closing a market. Compare Shopify Markets catalogs a...

08/25/2026

How to Add Checkout Validation Rules in Shopify

Add Shopify checkout validation rules that block invalid orders and show shoppers how to correct ...

08/25/2026

How to Set Minimum and Maximum Order Limits in Shopify

Set Shopify minimum and maximum order limits by quantity or value. Compare native controls with c...

08/19/2026

How to Stop Fake Orders on Shopify: A 9-Step Checklist

Learn how to stop fake orders on Shopify with checkout rules, targeted CAPTCHA, fraud analysis, p...

08/17/2026

How to Block a Discount Code in Shopify Checkout

Block an ineligible Shopify discount code using CartBlock checkout rules for cart value, products...

08/17/2026